Which of the following conditions can lead to the activation of the ATC system?

The activation of the ATC (Automatic Traction Control) system occurs due to a loss of traction that can happen in various driving conditions. When a vehicle is accelerating on a slippery surface, such as ice or wet pavement, the wheels can start to spin due to a lack of grip. The ATC system detects this wheel spin and automatically intervenes by reducing engine power or applying brakes to maintain traction.

This is crucial for vehicle safety, as it helps prevent skidding and loss of control during acceleration. By managing wheel speed and engine output, the ATC system ensures that the vehicle can gain traction in challenging conditions, which is especially important during acceleration when drivers might not be aware that traction is compromised.

In contrast, while going downhill, executing a sharp turn, or braking hard can present their own challenges and may engage other systems like ABS (Anti-lock Braking System), they are not directly responsible for activating the ATC system in the same manner that slippery surfaces do. Thus, accelerating on a slippery surface is the condition most clearly associated with ATC activation.